10个jQuery小技巧
作者: 来源: 时间: 2016-11-02 11:18:42
1. 禁止右键点击
$(document).ready(function(){
$(document).bind("contextmenu",function(e){
return false;
});
});
2. 隐藏搜索文本框文字
$(document).ready(function() {
$("input.text1").val("Enter your search text here");
textFill($('input.text1'));
});
function textFill(input){ //input focus text function
var originalvalue = input.val();
input.focus( function(){
if( $.trim(input.val()) == originalvalue ){ input.val(''); }
});
input.blur( function(){
if( $.trim(input.val()) == '' ){ input.val(originalvalue); }
});
}
3. 在新窗口中打开链接
$(document).ready(function() {
//Example 1: Every link will open in a new window
$('a[href^="http://"]').attr("target", "_blank");
//Example 2: Links with the rel="external" attribute will only open in a new window
$('a[@rel$='external']').click(function(){
this.target = "_blank";
});
});
// how to use
open link
4. 检测浏览器
$(document).ready(function() {
// Target Firefox 2 and above
if ($.browser.mozilla && $.browser.version >= "1.8" ){
// do something
}
// Target Safari
if( $.browser.safari ){
// do something
}
// Target Chrome
if( $.browser.chrome){
// do something
}
// Target Camino
if( $.browser.camino){
// do something
}
// Target Opera
if( $.browser.opera){
// do something
}
// Target IE6 and below
if ($.browser.msie && $.browser.version <= 6 ){
// do something
}
// Target anything above IE6
if ($.browser.msie && $.browser.version > 6){
// do something
}
});
5. 预加载图片
$(document).ready(function() {
jQuery.preloadImages = function()
{
for(var i = 0; i
}
}
// how to use
$.preloadImages("image1.jpg");
});
6. 返回页面顶部功能
$(document).ready(function() {
$('a[href*=#]').click(function() {
if (location.pathname.replace(/^//,'') == this.pathname.replace(/^//,'')
&& location.hostname == this.hostname) {
var $target = $(this.hash);
$target = $target.length && $target
|| $('[name=' + this.hash.slice(1) +']');
if ($target.length) {
var targetOffset = $target.offset().top;
$('html,body')
.animate({scrollTop: targetOffset}, 900);
return false;
}
}
});
// how to use
// place this where you want to scroll to
// the link
go to top
});
7. 获得鼠标指针XY值
$(document).ready(function() {
$().mousemove(function(e){
//display the x and y axis values inside the div with the id XY
$('#XY').html("X Axis : " + e.pageX + " | Y Axis " + e.pageY);
});
// how to use
10. jQuery延时加载功能
$(document).ready(function() {
window.setTimeout(function() {
// do something
}, 1000);
});
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